On Fri, 2006-02-24 at 08:31 +0800, Nathan Lynch wrote:
>
> In the watchdog thread, do touch_softlockup_watchdog in a
> non-preemptible section so that it won't touch another cpu's
> timestamp. This can happen in the window between the watchdog thread
> getting forcefully migrated during a cpu offline operation and
> kthread_should_stop.
Could we stop the thread in CPU_DOWN_PREPARE case, so it will not be
migrated to other CPUs? I suppose it's better the per-cpu thread only
runs on the specific cpu.
Thanks,
Shaohua
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